"A 'competition hypothesis' states that the species in faunas with more species (more diversity) have greater competition, narrower niches, and therefore smaller geographic ranges (less distribution). An alternative 'available space hypothesis' states that species occupy suitable available space without regard to the presence or absence of other species. We use American bats and North American rodents as groups to discriminate between the two hypotheses and see that available space is a better predictor of distribution than is diversity. Thus, the competition hypothesis is weakened and the available space hypothesis is strengthened"--p. [1].

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4254306 bytes

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application/pdf

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eng

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New York, N.Y. : American Museum of Natural History

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American Museum novitates ; no. 2716

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QL1 .A436 no.2716, 1981

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Competition (Biology)

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Habitat partitioning (Biology)

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Home range (Animal geography)

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Biogeography -- North America.

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Species.

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dc.title

Does interspecific competition limit the sizes of ranges of species?. American Museum novitates ; no. 2716

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dc.title.alternative

Competition and species ranges

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text

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American Museum NovitatesNovitates (Latin for "new acquaintances"), published continuously and numbered consecutively since 1921, are short papers that contain descriptions of new forms and reports in zoology, paleontology, and geology. New numbers are published at irregular intervals.